Transcript Are You a Smart 4th Grader?

Are You a Smart 4th Grader?
Magnetism 1
Every magnet has two poles. What
are they called?
Magnetism 1 Answer
• Every magnet has two poles. What
are they called?
• North and South
Magnetism 2
• What do you know about the ways
magnets repel and attract?
Magnetism 2 Answer
• What do you know about the ways
magnets repel and attract?
• North and South Poles attract.
• North and North repel.
• South and South repel.
Magnetism 3
• Which of these will stick to a magnet?
•
•
•
•
•
Iron nail
Wooden stick
Brass paper fastener
Steel wire screen
Scrap of paper
Magnetism 3 Answer
• Which of these will stick to a magnet?
• Iron nail
• Steel wire screen
Electromagnetism 1
• Explain how to make an
electromagnet.
Electromagnetism 1 Answer
• Explain how to make an electromagnet.
• Wrap a long insulated wire around an iron
nail.
• Hook one end of the wire to the negative
side of a D Cell and the other end to the
positive side of the D Cell.
Magnetism 4
• How do you make a temporary
magnet?
Magnetism 4 Answer
• How do you make a temporary
magnet?
• When a magnet is stuck to a steel
or iron nail, the nail becomes a
temporary magnet.
Electricity 1
•
•
•
•
•
•
Which of these will conduct electricity?
Iron nail
Wooden stick
Brass ring
Steel wire screen
Scrap of paper
Electricity 1 Answer
• Which of these will conduct electricity?
• Iron nail
• Brass ring
• Steel wire screen
Electricity 2
• Explain how the electric current
flows in a battery and bulb circuit.
Electricity 2 Answer
• Explain how the electric current flows in a
battery and bulb circuit.
• The current flows through the wire from
the negative end of the battery to the
filament in the bulb, through the other wire,
and back to the positive end of the battery.
Electricity 3
• What is a series circuit?
Electricity 3 Answer
• What is a series circuit?
• A series circuit may have several or many
bulbs or motors, but only one pathway to
the energy source (battery).
• If one bulb burns out, the circuit is
interrupted and all will burn out. (The same
is true with motors.)
Electricity 4
• What is a parallel circuit?
Electricity 4 Answer
• What is a parallel circuit?
• Each bulb has its own pathway to the
energy source. As long as they don’t burn
out, each bulb can continue to shine on its
own (even if one of the other bulbs burns
out)..
Electromagnetism 2
• How can you make an
electromagnet stronger?
Electromagnetism 2 Answer
• How can you make an electromagnet
stronger?
• You could use more winds of wire
and place the coils carefully next to
each other. (Don’t overlap!)
• You could use a stronger battery.
Energy 1
• Name 4 types of energy
Energy 1 Answer
• Name 4 types of energy
Heat energy
Sound energy
Light energy
Magnetic energy
Solar energy
Energy 2
• A toaster oven changes electricity
to what kind of energy?
Energy 2 Answer
• A toaster oven changes electricity
to what kind of energy?
• Heat energy
Energy 3
• A light bulb changes electricity to
what kind of energy?
Energy 3 Answer
• A light bulb changes electricity to
what kind of energy?
• Light energy
Magnetism 4
• How does a compass work?
Magnetism 4 Answer
• How does a compass work?
• The core of the earth is a magnet,
and the needle of the compass is
attracted to it.